Went on a 2 day trip and road the bike real hard. Today on the way home while on the trip I was starting the bike up and noticed big puff of exhaust from the rear cylinder on the intake side, I'm suspecting a blown headgasket. I checket the mating area between the head and top of cylinder and I can see a about a 2 inch stretch where its wet with oil and I can see where theres oil dripped down off the rear fin. I've had blown headgaskets before and it was pretty clear it went as I could feel the air as I revved the engine when I placed my hand in the area. Is this a different level of blown gasket as other than the puff of smoke I get every other time I start the bike and the obvious oil at the seam there is no real indication that there is a headgasket blow-bye. Is this real bad to the point I should tear it down and do a gasket job or keep running it ? What could happen if I keep running it? I just ran the bike for 2 days straight and it may have been like this for quite some time. its running good by the way.
Thanks
Lynn

 

My head leaks... But not that type.

Run a compression test?

 

Will do a compression test.

 

If it's leaking that bad with oil seeping, time to change it my friend. That's the last thing you need is be somewhere and the bike shut off and not start!

 

I think its been like this for probably 3-4 k miles as I recall seeing the puff come from intake side and just took it as coming from the carb. Heres the game plan, compression test, try retorque , compression test, go from there with those results.

 

Got it all taken down after the front right stud wouldn't hold a 42 foot torque. I had already timeserted that stud and the casing thread is pulling out.

 

replace the engine block - we tryed welding the hole up again and threading it and it still pulled out again with in a year -- we cut some of them in half to see what was up and scatter cracks running deep into the blocks inner flat side /// is the reason they dont do well with a repair the second time

 

My lucky day, one of my buddies just happened to have one of the oversized timeserts.Motor is mostly back together, I'll do a retorque in the morning and finish it off.

 

Back on the road and bike is running strong.